The AI Stock Boom Is Starting to Feel Nostalgic
Back in the ’70s, 50 stocks accounted for about 45% of the S&P 500’s value. Today, the top 10 companies make up 40% of the index.
Riding the wave.
Photographer: Patrick T. Fallon/Bloomberg
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Polaroid is no longer a public company, but if it were, it’d probably be doing OK.